Mortising-plane.



I'. W. LETNER. MbRTIsmG PLANE. .APPLICATION FILED APR.14, 1908.

Patented Mar. 9, 1909.

UNITED sTATEs PATENT oEEicE.

IPJ/INGrlV.4 LE'INER,- OF GRANTS PASS, OREGON.

MoRTrsINe-PLAN-E.

Specification. of Letters Patent.

Patented March 9, 1909.

Appleman. and Apru 14, isos. serial N0. 421,045.

i This invention relates to mortising planes, the object being to provide aplane which is especially designed for mortising doors or jambe to receive the door hinges, the plane -jembodying means. for chiseling the gains in f the door: and jamb and planing out the Wood between the gains .to a predetermined depth Awhich is regulated by a gage provided for that urpose.-

lVitlr the above and other objects in view, the nature of which will more fully appear as the description proceeds, the invention consists in thegnovel construction, combination and arrangement oi parts as herein fully described', illustrated and claimed ln the accompanying drawing:--Figure 1 is a perspective View of a mortising plane embodying the present invention. Fig. 2 is a vertical longitudinal section through the same on the line 2 2 of Fig. 1.

The plane contemplated in this invention comprises essentially a pair of base plates 1 .30 and 2 each ol' which 'is provided at one side with a guide flange 3 adapted to slide in contact with the side oi the doorer jamb as the case may be to pro erly position the plane, as a Whole, relative y to the work.

On each of the base plates 1 and 2 is the bed plate 4 of a guide 'frame or frame piece 45, the plates 4 and 1 beingconnected for relative sliding movement byprovidingthe plate j 1 with stud 6 which is received'in a slot 7 in the late 4. lThe plate 4 is provided with an ad itional slot .8 running arallel to the slot 7 and receiving a threadedJ stud 9 on the base plate 1,the stud being rovided with a wingednut 10 by means of w ich the relative positions of the lates 1 and 4 may be fixed after they have geen adjusted.

Projecting from the flanges 3 are lugs 12l having openings therethrough for the reception. of a connecting rod. 13 which admit of the adjustment of the base plates 1 and 2 toward and awa from each other to regulate the distance' between the chiseled blades hereinafter described. When the base plates 1 and 2 havebeen adjusted to the .desired 5 distancefrom each other, they are held fixed l. :relatively to each other by thumbfsrrews 14 which are th-AI-'eadedi into the lugs 12 and bind against the connecting rods 13. Each frame piece .comprises a slotted head 16 having penings 17 therein through whielr slides a While secu-red tothe lower end oli the plunger unger 148 having at its-npper-end a head I9 is a chiseled blade 2() movable up and down with the plunger 118. The plunger land the chisel blade 20- arenormally upheld as shown in Figs. 1 and 2' byV means of a coiled return: spring 21 which is interposed between a cross bar 21 of the framel piece and a step shoulder- 22y on the plungerl 18, said stop shoulder being adapted to come in contact with the lower side of the upper cross bar of the fra-nre piece to limit the-u ward move-j p The nient of the plunger and chisel blade. blade .2O rests at or near its oppositeends against vertical guide' shoulde-rs23 formed by the upright portions ol the frame pieces 5 as shown in Figs. and 2. j

-The frame pieces or guide frames 5 are turther provided with guide slots 24 through which a slide 25 is adaptedtobereciprocated., the said slidev being preferably in the form of a straight bar or squared or rectangular in shape in cross section, the Width oi the. bar

being slightly less than the wid-th ot the guide slots 24 so as to permit of a free lengthwise movement of said slide. Extending npward from the central portion of' the slide 25 is a handle bar 26:` provided with a head: piece 27 while extending downward from the slide V 25 and preferably in line with the handle bar 26 is a shank 28 the lower end of which is substantially Web-shaped or provided with areversely inclined shoulder 29 upon which are fastened correspondingly inclined planing bits 30 adapted to` operate in opposite directions as the slide 25 is moved bac and forth. Just above the planing bits 25, the shank 28 is provided with overhanging lugs 31 to which are secured gages 32 .which overhang the planing bits 30 and are provided with slots 33 for the reception of thumbscrews 34 which pass through the slots intol the lugs 31 and provide for adjusting the gages 32 relativelyto the planing bits 30.

ln order to limit the depth of cut of the planing v bits 30, depth gages 35 are provided in connection with each frame piece 5, said depth gagesconsisting of plates arranged in the lower portions of the guide slots 24 and being adjustable up and down by'means of thumbscrews 36 having a threaded engagement with the frame pieces as shown in Fig. l and a swiveled engagement with the gages 35.

' In the operation of planing the Work the slide 25 linally comes in' contact with the depth gages 35 and thus limits the depth of cut of the planing bits. a

In use, 'the mortising plane as a Whole is a plied to the door or jamb in the manner ustrated in Fig. 1. The heads 19 of the plungers' 18 are struck with a hammer or mallet to form the cross cuts and end Walls of the mortise. The slide 25 is then reciprocated by means of the handle bar 26 and in this part of the operation, the planingbits 30 act alternately to remove shavings from the Work until the operation is terminated by. the slide 25 coming in contact with` the depth gages 35. This provides a mortise of the requisite length and depth to' receive the hinge. lt will be understood that the frame pieces are adjusted to a distance apart equal to the length of the leaf of the hinge, which is 4to be applied 'to the Work operated upon and also that the depth gages are adjusted to permit the planing bits to plane away the work between the gains to a depth commensurate with the hinge leaf. It Will thus be seen that the mortising plane as a Whole may be adjustedto suit hinges of various size and thickness and thatl after the plane has been ,apply a num properly adjusted the Work may beperformed with great rapidity enabling the mechanic to ordinarily .requiredv to apply a single hinge.

Having thus descri ed. the invention,

. what is claimed as new., is

1; A. mortising plane comprising oppo sitelyarranged guide frames, a connecting rod on which said guide fra-mes are adjustable toward and away' from each' other, means for clamping said guide frames to the connecting rod, 'chisel blades carried by the er of hinges in the same time.

clases guide frames and movable relatively thereto in parallel planes, anda plane connected with said guide frames and comprising re-4 versely inclined bits movable toward and f away from the planes inwhich the chisel blades move and operable independently of the chisel blades.

2. A. mor-tising plane comprising oppositely arranged guide frames each embodying relatively movable and-adjustable sections, means for adjusting the' sections relatively to each other and clamping the same together, means for adjusting the distance between the guide frames embodying a connecting rod, andclamps on the guide frames, independently operable chisel blades carried by the guide frames, and a planing element having a sliding-engagement with said guide frames and embodying 'reversely inclined bits movable in a plane per endicular to the cutting edges of the cliise bladesh l3. A mortising plane comprising. oppositely arranged guide 1frames, means for adjusting the guide frames toward and away from each other, chisel blades carriedby the framev ieces and movable independently relative y-lthereto, a slide barmovable von the lguide frames independently 'of the chisel blades, a planing'bit carried by s'aid vslide bar .and movable in a' plane perpendicular to the cutting edges oi the chisel blades, and' means coasting With'said slide bar to limit the movement of said slide bar toward the Work.

In testimony whereof l affix signature 

